Sash lock



Patented Nov. 7, 1933 Edward H. Gayle, Addison, Ill. Application July17,1933. Serial No. 680,723

1 Claim;

My invention relates to a sash lock,more particularly a lock for thesash of double hung windows.

The present invention provides a sash lock which in its preferredembodiment comprises but three principal parts, i. e., a special lockingscrew and a pair of sash-carried sleeves by which such special screw iscarried and with which it 00- operates All parts of the lock lie belowthe upper surfaces of the sash rails by which the lock elements arecarried. The look, when its screw is in its locking position, serves todraw the contiguous sash rails tightly into engagement with each otherin addition to preventing relative slidin movement between the sash.

The locking screw and its cooperating sashcarried sleeves are soconstructed and arranged that the screw always has threaded engagementwith at least one of said sleeves, regardless of whether the screw is inits locking or non-lockposition. The several elements of the lock are ofsimple construction, economical to manufacture, and easy to install.

Other features, objects and advantages of my invention will appear fromthe following detailed description, wherein reference is made to theaccompanying sheet of drawings, in which 1 is an inside elevational viewof a window provided with the sash lock of my invention; 2 is afragmentary sectional View, on larger scale, which may be regarded astaken on' the line 22 of Fig. 1, looking in the direction indicated bythe arrows;

Fig. 3 is a view similar to Fig. 2, but illustrating a slightly modifiedembodiment of my invention; which said Fig. 3 may be regarded as takenon the line 33 of Fig. 1 and looking in the direction indicated by thearrows;

Fig. 4 is a fragmentary view partly in section and partly in elevation,which may be regarded as taken on the line l of Fig. 2 and looking inthe direction indicated by the arrows; and

Fig. 5 is a fragmentary inside elevational view which may be regarded astaken in the plane of the lines -15 of Fig. 2, looking in the direc-;

tion indicated by the arrows.

Similar characters of reference refer to similar parts throughout theseveral views.

Referring first to Figs. 1 and 2, at 6 I have illustrated a window framewithin which the upper sash 7 and the lower sash 8 are hung and guidedfor independent vertical sliding movements in the conventional or anysuitable manner. One of the parting strips with which dou- 26, and theelongated threaded portion 27.

ble hung sash frames are usually provided is indicated at 9 in Figs. 2and 3.

It will be noted that the lower rail 10 of the; upper sash and the upperrail 11 of the lower sash are provided with complementary faces 12 and13-which are adaptedto be locked and drawn snugly into opposition bymeans of the sash loci:

now to be described.

Referring now to Fig. 2, it will be seen that the lower rail 10 of theupper sash is recessed, m'idway between its ends, to receive aninternally threaded metal sleeve legthe axisof which is disposed atrightangles-to. the said sash rail. The sleeve 14 is provided with anintegral attac h' merit flange 15, which is countersunk in the inner Joface of the rail 10 and is preferably retained in position by screws16-46.

Formed in the upper rail 11 of the lower sash, midway between its ends,and having its axis at right angles to said rail, is a bore 17, the lefthand 75. end (Fig. 2) of which is disposed in exact alignment with thebore of the sleeve is when the sash are in the fully closed positionsillustrated in Fig. 2.

The bore 17 is enlarged at its inner or right so hand end (Fig. 2) toreceive a metal sleeve 18, which is preferably provided with an integralattachment escutcheon 19, which is secured to the inner surface of thesash rail 11 by screws 29-429. The inner, surface of the sleeve 18 isthreaded for a short distance from left to right (Fig. 2), as indicatedat 21, the remainder of the innersurfaceof said sleeve being smooth, asindicated at 22.

Carried by and cooperating with the sleeves 1e and 18 is a speciallocking screw indicated as a whole at 23. Said locking screw 23comprises four distinct parts, namely the handle portion 24, thecylindrical portion 25, the reduced portion When the sash and lock partsare in the positions shown in Fig. 2, the portion 25 of the specialscrew lies within the unthreaded portion 22 of the sleeve 18, thereduced portion 26 of the screw clears the threads 21 of the sleeve 13,and the 10d threaded portion 27 of the screw is in engagement with theinternal threads of the sleeve 14. The handle portion 24 of the screwpreferably has a shoulder 28, which'bears against the escutcheon 19 whenthe parts are in the relative positions shown in Fig. 2. It will thus beseen that turning of the handle 24 in the clockwise direction from aposition of Fig. 2 will result in drawing the opposed faces 12 and 13 ofthe sash bars 1 lit tightly into engagement.

' With the sash and the several lock elements in the positions shown inFig. 2, the sash are held against relative sliding movements. When it isdesired to unlock the sash, the special screw 23 is turned in thecounterclockwise direction until the threaded portion 27 of the screwhasbeen entirely disengaged from the sleeve 14 of the upper sash. Itwill be observed, however, that it is impossible entirely to disengagethe screw from the sleeve 14 without having the threaded portion 27 ofthe screw engage the threaded portion 21 of the sleeve 18 of the lowersash. By reason of the fact that the threaded portion 27 of the screwmust at all times engage the internal threads of one or both of thesleeves 14' and 18, there is no danger of the screw being, accidentallywithdrawn or shaken out of the upper bar 11 of the lower sash when thescrew is occupying its non-locking position.

In the modified embodiment of my invention illustrated in Fig. 3, thetransverse bore 17 of the upper bar 11 of the lower sash is of uniformdiameter throughout its length, i. e, equal to the outer diameter of thesleeve 18. With the bore 17 thus enlarged in diameter, it is possible toprovide the threaded portion 27 of the screw with a cross pin 30 whichis adapted to engage the inner or left hand end (Fig. 3) of the sleeve18 when the screw is entirely out of engagement with the sleeve 14 ofthe upper sash. The engagement of the cross pin 30 with the inner end ofthe sleeve 18 serves to advise the operator that the locking screw is ina position such that it is both possible and safe to move either one ofthe sashes relative to the other, and also prevents further turning ofthe screw in the counterclockwise direction after the screw has assumedits non-locking position.

The cylindrical portion 25 of the screw has a working fit in thecylindrical portion 22 of the sleeve 18, thereby assuring the accuratelocation of the screw to register with the sleeve 14.

Having thus illustrated and described my invention in two preferredembodiments thereof,

what I claim is new and desire to secure by Letters Patent of the UnitedStates is:

In combination with meeting rails of a pair of double hung sash, aninternally threaded sleeve carried by the outer rail and extending fromthe inner face thereof partly into said rail, a sleeve located in theforward part of the inner rail within a bore extending through saidrail, adapted to lie in alignment with the sleeve in the outer rail inclosed position of the sashes, the last said sleeve having. acylindrical portion at its inner end and a threaded portion at its outerend, a screw adapted to lie Within said sleeves and with- .in said bore,said screw comprising a threaded portion at its outer end adaptedthreadedly to engage the threaded portion of either sleeve, a handleportion at its inner end, an overhanging portion adjacent said handleadapted to abut the outer end of the sleeve carried by the inner rail, acylindrical portion adapted to have a working fit in the cylindricalportion of the last said sleeve, an intermediate portion connecting thecylindrical portion to the threaded portion of said screw, and anabutment means carried by said screw at anintermediate portion of thethreaded portion thereof, adapted to abut against the outer end of thesleeve carried by the inner rail when the screw is moved to unlockedposition.

EDWARD H. GAVIE'.'

